GE SF6, Instruction Manual

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Maintenance
Maintenance plan
GE Information
08- 2016 L51- 004EN/07
2/8
Maintenance plan
Maintenance
frequency
Under normal operating conditions, the maintenance plan may be defined as
follows:
Type of
examination
Frequency Comment
Maintenance
visits
(M1)
Once or twice a year
It is advisable to perform
at least 2 CO duty cycles
per year, when apparatus
are scarcely used, in order
to check that the
circuit- breaker and
associated control
circuits are working
properly.
Inspections
(M2)
Every five years
This necessitates
circuit- breaker shutdown. It
is not necessary, however to
dismantle interrupting
chambers and other
sub- assemblies.
Overhaul
(M4)
Perform when one of the
following criteria is reached:
 operating life time  20
years
 number of mechanical
cycles

3,000

electric wear limit
However, it is recommended
to proceed with inspection of
the pole or circuit- breaker
used the most, then to adapt
the maintenance
programme for the other
breakers depending on the
results observed.